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Finding the Fourth Proportional to 19,079.34, 28,605.66 and 8,400.48

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Solution

The fourth proportional to 19,079.34, 28,605.66 and 8,400.48 is: 12,594.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,079.34 : 28,605.66 = 8,400.48 : x
  2. Step 2: Convert to fraction form
    19,079.34/28,605.66 = 8,400.48/x
  3. Step 3: Cross multiply
    19,079.34x = 28,605.66 × 8,400.48
  4. Step 4: Simplify right side
    19,079.34x = 240,301,274.72
  5. Step 5: Solve for x
    x = 240,301,274.72/19,079.34
  6. Step 6: Final answer
    x = 12,594.84

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.